/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

import { Plugin } from 'vite';
import path from 'path';
import fs from 'fs';

export type PluginOptions = {
  env?: string;
};

const ResolveEnvPlugin = (options?: PluginOptions): Plugin => {
  const env = options?.env;

  return {
    name: 'vite-plugin-resolve-env',
    enforce: 'pre',
    resolveId(id, importer) {
      if (importer && env) {
        const dir = path.dirname(importer);
        const newId = path.resolve(dir, `${id}.${env}`);

        if (newId.indexOf('/src/configs') === -1) return;
        try {
          fs.accessSync(`${newId}.ts`, fs.constants.R_OK);
          return newId;
        } catch (err) {
          return;
        }
      }
    },
  };
};

export default ResolveEnvPlugin;
